neanderthals

Scientists say ancient bed-hopping has left a mark on the human genome.
The discovery actually says something important about modern humans' migration out of Africa.
Scientists say it could have been a matter of culture.
The DRD4 7R gene makes you think like a Neanderthal. If you've got it, you're sensation-seeking, risk-taking, impulsive, and creative. We're ADHD, bipolar, and have addictive personalities.